It’s not often that the political and fashion worlds collide, but one designer brought the two industries into the same realm on Thursday afternoon.

French designer Sophie Theallet, who has dressed First Lady Michelle Obama, tweeted an open letter explaining why she’ll stay away from Melania Trump once she moves into the White House.

“As an independent fashion brand, we consider our voice an expression of our artistic and philosophical ideas. The Sophie Theallet brand stands against all discrimination and prejudice,” the letter says.

Theallet, an immigrant, admits she is “well aware it is not wise to get involved in politics,” but that the bottom line of her business is “not just about money” and she must stand by her values. Those values, she writes, do not align with “the rhetoric of racism, sexism, and xenophobia unleashed by [Donald Trump’s] presidential campaign.”